Features:
Lightweight Ventilation holes to reduce heat 2 piece molded shell four best fit Rigid stabilization Tracheostomy opening X-ray, CT and MRI lucent
Size Chart:
Small - 10"~13"
Medium - 13"~16"
Large - 16"~19"
XL - 19" ~24"
Composition:
50% PE Foam
38% ABS
12% Nylon
Country of Origin: Taiwan